Below-knee prosthesis having an adapter displaceable on a spherical segment surface
First Claim
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1. A below-knee prosthesis comprising:
- a below-knee socket for receiving a below-knee stump, andan extension piece which is connected to the below-knee socket via an adapter fastened at a lower end of the below-knee socket,wherein the adapter is displaceable and fixable in relation to the lower end of the socket on a spherical segment surface having circular arcs lying in sagittal and frontal planes, andwherein the socket is sized and shaped to engage a residual stump such that a resultant center of a patient'"'"'s knee coincides with a center defined by said spherical segment surface.
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Abstract
A below-knee prosthesis in which an adapter is displaceable and fixable in relation to the lower socket end on a circular segment surface whose circular arc lies in the sagittal and frontal plane and whose midpoint is the center of the knee.
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Citations
12 Claims
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1. A below-knee prosthesis comprising:
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a below-knee socket for receiving a below-knee stump, and an extension piece which is connected to the below-knee socket via an adapter fastened at a lower end of the below-knee socket, wherein the adapter is displaceable and fixable in relation to the lower end of the socket on a spherical segment surface having circular arcs lying in sagittal and frontal planes, and wherein the socket is sized and shaped to engage a residual stump such that a resultant center of a patient'"'"'s knee coincides with a center defined by said spherical segment surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A below-knee prosthesis comprising:
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a below-knee socket for receiving a below-knee stump, and an extension piece having an upper end and a lower end, the upper end being connected to the socket via an adapter fastened at a lower end of the socket, the lower end of the extension piece being connected to a matching foot part, wherein the adapter is displaceable and fixable in relation to the lower end of the socket on a spherical segment surface having circular arcs--defined by two orthogonal sectional planes--which lie in sagittal and frontal planes, wherein the socket is sized and shaped to engage a residual stump such that a resultant center of a patient'"'"'s knee coincides with a center defined by said spherical segment surface, and wherein the spherical segment surface is an only adjusting surface for selectively orienting the adapter relative to the socket. - View Dependent Claims (12)
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Specification